The prime-time event will be moderated by CNN anchor Jake Tapper and the network’s chief political correspondent Dana Bash live from Washington, D.C.

“With a critical deadline looming, Graham and Cassidy, architechs of the Republicans latest healthcare proposal, will debate Sanders and Klobuchar on the merits of the plan that would repeal and replace Obamacare,” a network said in its announcement.

The debate will come just days before a possible vote on the bill in the Senate, which would have to occur next week for Republicans to use special budgetary rules to avoid a Democratic filibuster.

Republican lawmakers are optimistic they can get the necessary 50 votes to pass the bill before a Sept. 30 deadline.